firewire: core: fix __must_hold() annotation

The variable name passed to __must_hold() annotation is invalid.

This commit fixes it.

Fixes: 420bd70 ("firewire: core: use spin lock specific to transaction")
Link: https://lore.kernel.org/r/20251023104349.415310-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>

Author: takaswie

drivers/firewire/core-transaction.c

@@ -269,7 +269,7 @@ static void fw_fill_request(struct fw_packet *packet, int tcode, int tlabel,
 }
 
 static int allocate_tlabel(struct fw_card *card)
-__must_hold(&card->transactions_lock)
+__must_hold(&card->transactions.lock)
 {
 	int tlabel;